This page is not maintained since October 2012, as I moved to NII Tokyo.
Reseach Interests & Projects
Personalization in Databases
My main research interest is personalization of database and information systems. Most of my recent work has been performed within the Apis Project. I have been focusing mainly on Skyline queries which provide an easy-to-use and personalized access to the best objects in a database. However, skyline query result sets may grow dramatically in size with an increasing number of attributes, thus often rendering query result sets useless to users. Furthermore, they lack the desireable ability to compensate between attribute domains. My trade-off skyline aproach provides a solution to those two problems by introducing novell modelling techniques and algorithms allowing the user to specify trade-offs. Trade-offs skylines provide an additional layer of personalization on top of skylines and further reduce the size of result sets.
My addiotional reserach interests and future works focus on personalization of open linked data queries as well as on personalized natural language queries.
Anaqonda Project - Analogy Queries by Ontology-based Data Analytics
The APIS project (Advanced Personalization in Information Services) investigates the impact of personalization technology on future information provisioning. Being interdisciplinary between computer science and cognitive sciences a basic belief of the APIS group is that modern information provisioning needs advanced query processing and optimization techniques using and understanding human preferences, usage patterns, conceptual views and (domain) ontologies. At the same time the architectures for information provisioning have to move from monolithical database systems to more open service-oriented infrastructures.
Academic Programm Committee Memberships
University Committee Memberships
2011-2012: PostDoc at Technische Universität Braunschweig
2011: Defense of Doctoral Thesis at Technische Universität Braunschweig
2008-now: Researcher at Institute for Information Systems, Technische Universit Braunschweig
2006-2008: Researcher at L3S Research Center, Leibniz University Hannover
2005: Diploma Thesis at Collaborative Software Development Laboratory, University of Hawai’i, Honolulu - Manoa
2002-2004: Assistant Researcher at Fraunhofer Institute for Experimental Software Engineering, Kaiserslautern
2000-2004: Student at University Kaiserslautern